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prevent btrfsck to run on mounted filesystems

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As recently discussed on the list, btrfsck should only be run on
unmounted filesystems. This patch adds a short check for the mount
status at the beginning of btrfsck. If the FS is mounted, the
program aborts showing an error message.

Signed-off-by: Andi Drebes <lists-receive@programmierforen.de>
This commit is contained in:
Andi Drebes 2010-09-09 10:58:43 +08:00 committed by Chris Mason
parent 09559bfe7b
commit 659d37c68d
1 changed files with 10 additions and 0 deletions
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10
btrfsck.c
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@ -28,6 +28,7 @@
#include "transaction.h"
#include "list.h"
#include "version.h"
#include "utils.h"
static u64 bytes_used = 0;
static u64 total_csum_bytes = 0;
@ -2821,6 +2822,15 @@ int main(int ac, char **av)
radix_tree_init();
cache_tree_init(&root_cache);
if((ret = check_mounted(av[1])) < 0) {
fprintf(stderr, "Could not check mount status: %s\n", strerror(ret));
return ret;
} else if(ret) {
fprintf(stderr, "%s is currently mounted. Aborting.\n", av[1]);
return -EBUSY;
}
root = open_ctree(av[1], 0, 0);
if (root == NULL)